Can you post a pic? Is she a calico, tabby, or what? To me, it sounds like she is an alpha female trying to make that known to all the other felines. She is just about the right age for that. Seeing a photo of her, and her with another of the cats in the pic, would help.

Also, you didn't mention (or I missed it) has she been spayed? Have all the other cats in the house been fixed?

Make sure you keep her nails clipped, you don't need scratches from her - on you or on the other cats.